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Message-ID: <4ED56B1C.7040407@panasas.com> Date: Tue, 29 Nov 2011 15:30:36 -0800 From: Boaz Harrosh <bharrosh@...asas.com> To: Randy Dunlap <rdunlap@...otime.net> CC: Trond Myklebust <Trond.Myklebust@...app.com>, Benny Halevy <bhalevy@...ian.com>, Stephen Rothwell <sfr@...b.auug.org.au>, <linux-next@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>, Michal Marek <mmarek@...e.cz>, NFS list <linux-nfs@...r.kernel.org>, open-osd <osd-dev@...n-osd.org> Subject: Re: ore: FIX breakage when MISC_FILESYSTEMS is not set On 11/29/2011 03:39 PM, Randy Dunlap wrote: > On 11/29/2011 02:22 PM, Boaz Harrosh wrote: >> On 11/29/2011 09:33 AM, Trond Myklebust wrote: >>> On Tue, 2011-11-29 at 14:21 +0200, Benny Halevy wrote: >>>> On 2011-11-29 02:13, Boaz Harrosh wrote: >> >>>>> >>>>> The solution is to force all users of ORE (exofs, nfs) to manually >>>>> select everything auto-magically selected before. >>>> >>>> How about using "depend ORE" rather than "select ORE"? >>> >>> Right. Make PNFS_OBJLAYOUT and EXOFS_FS depend on ASYNC_XOR (or select >>> it) and then make ORE depend on EXOFS_FS || PNFS_OBJLAYOUT. >>> >>> There should be no need to add the 'select ORE'... >>> >> >> No! guys! >> >> One it will not solve my problem because any >> solution that needs to inspect exofs/Kconfig file will >> not work if MISC_FILESYSTEMS is not selected and your >> solutions involve that. >> >> And two: >> All the user needs to do is Select NFS4.1 everything >> else should be done automatically. He should not need >> to go to misc-filesystems and select ORE so he can have >> pnfs-objects. That's a nightmare. >> >> And anyway the current Kernel rule is that a user of a library >> needs to select it and all it's dependencies, because select >> is not recursive. Now I devised a little skim that can avoid > > Since 'select' is not recursive, how does the "select ASYNC_XOR" > handle ensuring that what it selects (ASYNC_CORE and XOR_BLOCKS) > have been enabled? > Not sure why it works than. I looked at config MD_RAID456 and from it's selects I only need ASYNC_XOR. In later Kernels I will also need the RAID6_** stuff. >> that, which is not conventional but works very nice. It was >> almost good enough only we have the problem that exofs is under >> that big MISC_FILESYSTEMS nub. >> >> So It's the regular Kernel way, for now. >> >> (The real solution is to move ORE to lib/ which would enable my >> clever trick. But I don't want to go there only because of that) >> >> I'll fix the typos though > > With the patch applied, I am still seeing this kconfig warning: > > warning: (PNFS_OBJLAYOUT) selects ORE which has unmet direct dependencies (MISC_FILESYSTEMS) > OK So I guess I need a much deeper change and move ORE to lib/ or I can do the below change. Please advise what you think is the best for now? Thanks Randy for yur help --- From: Boaz Harrosh <bharrosh@...asas.com> Subject: [PATCH] ore: FIX breakage when MISC_FILESYSTEMS is not set As Reported by Randy Dunlap When MISC_FILESYSTEMS is not enabled: fs/built-in.o: In function `objio_alloc_io_state': objio_osd.c:(.text+0xcb525): undefined reference to `ore_get_rw_state' fs/built-in.o: In function `_write_done': objio_osd.c:(.text+0xcb58d): undefined reference to `ore_check_io' fs/built-in.o: In function `_read_done': ... When MISC_FILESYSTEMS, which is more of a GUI thing then anything else, is not selected. exofs/Kconfig is never examined during Kconfig, and it can not do it's magic stuff to automatically select everything needed. We must split exofs/Kconfig in two the ore one is always included and the exofs one is left in it's old place in the menu. Signed-off-by: Boaz Harrosh <bharrosh@...asas.com> --- fs/Kconfig | 2 ++ fs/exofs/Kconfig | 11 ----------- fs/exofs/ore.Kconfig | 12 ++++++++++++ 3 files changed, 14 insertions(+), 11 deletions(-) create mode 100644 fs/exofs/ore.Kconfig diff --git a/fs/Kconfig b/fs/Kconfig index 5f4c45d..fd7bfef 100644 --- a/fs/Kconfig +++ b/fs/Kconfig @@ -218,6 +218,8 @@ source "fs/exofs/Kconfig" endif # MISC_FILESYSTEMS +source "fs/exofs/ore.Kconfig" + menuconfig NETWORK_FILESYSTEMS bool "Network File Systems" default y diff --git a/fs/exofs/Kconfig b/fs/exofs/Kconfig index da42f32..86194b2 100644 --- a/fs/exofs/Kconfig +++ b/fs/exofs/Kconfig @@ -1,14 +1,3 @@ -# Note ORE needs to "select ASYNC_XOR". So Not to force multiple selects -# for every ORE user we do it like this. Any user should add itself here -# at the "depends on EXOFS_FS || ..." with an ||. The dependencies are -# selected here, and we default to "ON". So in effect it is like been -# selected by any of the users. -config ORE - tristate - depends on EXOFS_FS || PNFS_OBJLAYOUT - select ASYNC_XOR - default SCSI_OSD_ULD - config EXOFS_FS tristate "exofs: OSD based file system support" depends on SCSI_OSD_ULD diff --git a/fs/exofs/ore.Kconfig b/fs/exofs/ore.Kconfig new file mode 100644 index 0000000..1ca7fb7 --- /dev/null +++ b/fs/exofs/ore.Kconfig @@ -0,0 +1,12 @@ +# ORE - Objects Raid Engine (libore.ko) +# +# Note ORE needs to "select ASYNC_XOR". So Not to force multiple selects +# for every ORE user we do it like this. Any user should add itself here +# at the "depends on EXOFS_FS || ..." with an ||. The dependencies are +# selected here, and we default to "ON". So in effect it is like been +# selected by any of the users. +config ORE + tristate + depends on EXOFS_FS || PNFS_OBJLAYOUT + select ASYNC_XOR + default SCSI_OSD_ULD -- 1.7.6.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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